Data transmission device



FIG. 1 is a front elevational view of a data transmission device showing my new design;

FIG. 2 is a rear elevational view of the data transmission device of FIG. 1;

FIG. 3 is a top view of the data transmission device of FIG. 1;

FIG. 4 is a bottom view of the data transmission device of FIG. 1;

FIG. 5 is a right side view of the data transmission device of FIG. 1;

FIG. 6 is a left side view of the data transmission device of FIG. 1; and,

FIG. 7 is a perspective view between a front and a right side of the data transmission device of FIG. 1.

The broken lines in FIGS. 3 and 4 depict parts of the data transmission device that form no part of the claimed design. 

CLAIM The ornamental design for a data transmission device, as shown and described. 